CVE-2026-3706: mkj Dropbear

mkj Dropbear S Range Check curve25519.c unpackneg signature verification

CVSS 6.3 MediumEPSS 0.0018 · 7th percentile

Published by the CVE Program (CNA: VulDB) at 8 Mar 2026, 05:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
mkj	Dropbear	affected 2025.0 affected 2025.1 affected 2025.2 affected 2025.3 affected 2025.4 affected 2025.5 affected 2025.6 affected 2025.7 affected 2025.8 affected 2025.9 affected 2025.10 affected 2025.11 and 78 more

Identifiers

CVE-2026-3706

CNA

VulDB

Weakness (CWE)

CWE-345 · CWE-347

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.3	Medium	4.0	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U	CNA (VulDB)Used for this record
3.7	Low	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C	CNA (VulDB)
3.7	Low	3.0	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C	CNA (VulDB)
2.6	Low	2.0	AV:N/AC:H/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0018, the 7th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 8 Mar 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/?id.349652 vdb-entrytechnical-description
vuldb.com/?ctiid.349652 signaturepermissions-required
vuldb.com/?submit.765933 third-party-advisory
github.com/mkj/dropbear/issues/406 issue-tracking
github.com/mkj/dropbear/pull/407 issue-trackingpatch
github.com/mkj/dropbear/commit/fdec3c90a15447bd538641d85e5a3e3ac981011d patch
github.com/str4d/ed25519-java/issues/82#issue-727629226 issue-tracking
github.com/mkj/dropbear/ product

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.